package com.kuang.controller;


import com.baomidou.mybatisplus.core.metadata.IPage;
import com.kuang.domain.Book;
import com.kuang.service.IBookService;
import com.kuang.utils.R;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.io.IOException;
import java.util.List;

@RestController
@RequestMapping("/books")
public class BookController {

    @Autowired
    private IBookService bookService;


    //查询
    @GetMapping
    public R getAll() {
        return new R(true, bookService.list());
    }

    //根据id查询
    @GetMapping("{id}")
    public R getAllById(@PathVariable Integer id) {
        return new R(true, bookService.getById(id));
    }

    //修改
    @PutMapping
    public R update(@RequestBody Book book) {
        return new R(bookService.updateById(book));
    }

    //添加
    @PostMapping
    public R save(@RequestBody Book book) throws IOException {
        boolean flag = bookService.save(book);
        return new R(flag, flag ? "添加成功^_^" : "添加失败-_-!");

    }

    //删除
    @DeleteMapping("{id}")
    public R deleteById(@PathVariable Integer id) {
        return new R(bookService.removeById(id));
    }

    @GetMapping("{currentPage}/{pageSize}")
    public R getPage(@PathVariable int currentPage,@PathVariable int pageSize,Book book){
//        System.out.println("参数==>"+book);

        IPage<Book> page = bookService.getPage(currentPage, pageSize,book);
        //如果当前页码值大于了总页码值，那么重新执行查询操作，使用最大页码值作为当前页码值
        if( currentPage > page.getPages()){
            page = bookService.getPage((int)page.getPages(), pageSize,book);
        }
        return new R(true, page);
    }
}
